It takes a lot of energy to make LEGO plastic bricks. But a new LEGO factory in Vietnam is aiming to manufacture the bricks in a way that’s as kind to the environment as possible.

The factory, which opened near Ho Chi Minh City on April 9 and is one of six LEGO factories in the world, will make LEGO bricks for customers in Southeast Asia. Production will involve both humans and machines: Skilled workers will operate robots, which will make the plastic bricks by melting different colored plastic grains and pouring them into molds.

The factory is enormous—as large as 62 soccer fields. That means it requires plenty of electricity.

But if all goes as planned, the factory will produce its own power by early 2026 with the help of 12,400 solar panels. The panels will capture the Sun’s energy (its light) and then convert it into electricity, which will be stored in giant batteries.

Why use solar panels? Many other forms of energy require fuels such as oil or coal. These fuels are in limited supply and produce pollution called greenhouse gases when they’re burned to make electricity. But since the Sun is like a light bulb that never burns out, solar energy can be collected again and again. Solar energy also produces less pollution than many other types of energy.